#pragma once
#include <memory>

struct AVCodecContext;
struct AVCodecParameters;
struct AVPacket;
struct AVFrame;

namespace engine::ffmpeg {

class CodecContext {
public:
    CodecContext()  = default;
    ~CodecContext() = default;
    CodecContext(const CodecContext &) = delete;
    CodecContext &operator=(const CodecContext &) = delete;

    bool open(const AVCodecParameters *par);
    void close();

    bool sendPacket(const AVPacket *pkt) const;

    bool receiveFrame(AVFrame *frame) const;

    void flush();

    bool isOpen()    const { return m_ctx != nullptr; }
    int  sampleRate()const;
    int  channels()  const;

    const AVCodecContext *get() const { return m_ctx.get(); }

private:
    struct Deleter { void operator()(AVCodecContext *p) const; };
    std::unique_ptr<AVCodecContext, Deleter> m_ctx;
};

} // namespace engine::ffmpeg